4985557 has 2 divisors, whose sum is σ = 4985558. Its totient is φ = 4985556.

The previous prime is 4985527. The next prime is 4985569. The reversal of 4985557 is 7555894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2937796 + 2047761 = 1714^2 + 1431^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4985557 is a prime.

4985557 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4985507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492778 + 2492779.

It is an arithmetic number, because the mean of its divisors is an integer number (2492779).

Almost surely, 2^4985557 is an apocalyptic number.

It is an amenable number.

4985557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4985557 is an equidigital number, since it uses as much as digits as its factorization.

4985557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 43.

The square root of 4985557 is about 2232.8360889237. The cubic root of 4985557 is about 170.8327879948.

The spelling of 4985557 in words is "four million, nine hundred eighty-five thousand, five hundred fifty-seven".